Yacht Design and Yacht Construction"
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16th International Symposium on "Yacht Design and Yacht Construction" Heer, P.W. de, Editor Report 1239-P November 2000 TU Deift Faculty of Design, Engineering and Productiony Department of Marine Technology Deift University of Technology Ship 1-lydronsechanics Laboratory 16th International Symposiumon "Yacht Design and Yacht Construction" Amsterdam, 13 November 2000 PROCEEDINGS Edited by P.W. de Heer October 2000 Organized by HIS WA - National Association of Watersport in The Netherlands, the International Trade Show for Marine Equipment METS 2000 and the Deift University of Technology Deift University of Technology Ship Hydromechanics Laboratory Printed by: DocVision BV Leeghwaterstraat 42 2628 CA Deift The Netherlands Telefoon: +31 15 2784642 Fax: +31 15 2781749 CIP-DATA KONINKLIJKE BIBLIOTHEEK, DEN HAAG 16th International Symposium on "Yacht Design and Yacht Construction": proceedings of the 16th International Symposium on "Yacht Design and Yacht Construction", Amsterdam 13 November 2000/P.W. de Fleer(editor),-DeiftUniversityof Technology,Ship Hydromechanics Laboratory, The Netherlands. ISBN: 90 - 370 - 0185 - 8 Subject headings: Yacht Design, Yacht Construction TABLE OF CONTENTS PROGRAMME 5 INTRODUCTION 7 THE VERIFICATION OF MAST AND RIGGING OF LARGE SAILING VESSELS Michael J. Gudmunsen, Lloyd's Register, London, England 9 PRACTICAL EXPERIENCE ON REDUCING MOTIONS AND IMPROVING COMFORT ON BOARD LARGE MOTOR YACHTS H.M. van Wieringen, F.A. Gumbs, F. De Voogt, International Ship Design and Engineering, Bloemendaal, The Netherlands R. Dallinga, MARiN, Wagenin gen, The Netherlands 51 SOME CRITICAL NOTES ON DESIGNING WITH COMPOSITES Jons Degrieck, Ghent University, Ghent, Belgium 65 ALL ELECTRIC YACHT- ELECTRIFYING OR TERRIFYING? U. Nienhuis, Netherlands Institute for Maritime Research, The Hague, The Netherlands 77 PERFORMANCE PREDICTION OF SCHOONERS USING WINDTUNNEL DATA IN VPP CALCULATIONS I.M. C. C'ampbell. Wofson Uiit MTL4, Southampton, U'?ited Kingdom G. Dijkstra, Gerard Djkstra and Partners, Amsterdam, The Netherlands 91 THE INFLUENCE OF BOW SHAPE ON THE PERFORMANCE OF SAILING YACHTS J.A. Keuning, R. Onnink, A. Damman, Ship Hydromechanics Laboratory, DeIft University of Technology, Deift, The Netherlands 107 PROGRAMN'IE 16th International HISWA Symposium on "Yacht Design and Yacht Construction". Monday, 13 November 2000 JADE LOUNGE 08:00 - 10:00 Registration and information ROOM RIS 10:00 - 10:15 Moderator Jack A. Somer Word of welcome by Jack A. Somer 10:15 - 11.00 Michael J. Guthnunsen, Lloyd's Register, London, England THE VERJFICA T1ON OF MAST AND RIGGING OF LARGE SAILING VESSELS 11.00-11.30 Break 11:30 - 12:15 H.M. van Wieringen, F.A. Gumbs, F. De Voogt, International Ship Design and Engineering, Bloemendaal, The Netherlands R. Dallinga, MARIN, Wageningen, The Netherlands PRA CTI CAL EXPERIENCE ON RED UCING MOTIONS AND iMPROVING COMFORT ON BOARD LARGE MOTOR YACHTS 12:15 - 13:00 Jons Degrieck, Ghent University, Ghent, Belgium SOME CRITICAL NOTES ON DESIGNING WiTH COMPOSITES 13.00 - 14.00 Lunch in Parkrestaurant? 5 14.00 - 14.45 U. Nienhuis, Netherlands Institute for Maritime Research,The Hague, The Netherlands ALL ELECTRIC YACHT- ELECTRIFYING OR ThRRIFYING? 14.45 - 15.30 I.M.C. Campbell, Wolfson Unit MTIA, Southampton, United Kingdom G. Dijkstra, Gerard Dijkstra and Partners, Amsterdam, The Netherlands PERFORMANCE PREDICTION OF SCHOONERS USING WIND TUNNEL DATA IN VPP CALCULATIONS 15.30 - 16.00 Break 16.00 - 16.45 J.A. Keuning, R. Onnink, A. Damman, Ship Hydromechanics Laboratory, Deift University of Technology, Delft, The Netherlands THE INFLUENCE OF BOW SHAPE ON THE PERFORMANCE OF SAILING YACHTS 16.45 - 17.00 Closing JADE LOUNGE 17.00 - 18.00 Reception 6 INTRODUCTION On behalf of the Organizing Committee ot the 16th International HISWA Symposium on Yacht Design and Yacht Construction I have the pleasure of invitingyou to participate in the forthcoming Symposium. The Organizing Committee believes that it succeeded in getting togetheran interesting set of papers presented by well-known experts in their fields. This year, the design and construction of large custom-built yachts is emphasised. The construction of largecustom-built yachts, both motor yachts and sailing yachts, is an ever-increasing market, in particularover the last decades, and an area in which high-tech developments playan important role both in realising these projects as well as in acquiring them. This year, the set-up of the Symposium is slightly changed to allow formore time in-between the sessions, so that ample time is available for informal contacts between the delegatesand/or the presenters of the various papers. Since yacht designers and researchers from allover the world attend the Symposium it never fails to be an interesting day for all ofyou. We hope to have the pleasure of welcoming you at the 16th Symposium. Alexander Keuning 7 THE VERIFICATION OF MASTS AND RIGGING OF LARGE SAILING VESSELS THE VERIFICATION OF MASTS AND RIGGING OF LARGE SAILING VESSELS By M. J. Gudmunsen Principal Surveyor Lloyd's Register Marine Division 9 THE VERIFICATION OF MASTS AND RIGGING OF LARGE SAILING VESSELS The Verification of Masts and Rigging of Large Sailing Vessels by M. J. Gudniunsen Senior Surveyor Lloyd's Register Marine Division SYNOPSIS This paper presents the formal classification approach used in the appraisal and verification of the masts and standing rigging of large sailing passenger vessels. Comparison is made between the tabular scanthngs for masts and rigging in Lloyds Register's rules and regulations of 1922, and the direct calculation techniques currently employed by Lloyds Register. The calculation methods and assumptions are described with illustrations from analyses of the rigs of both newbuilding vessels and vessels currently in service. Amongst the number of large sailing vessels rigs referenced, examples from the "STAD AMSTERDAM" rig have been presented, as it represents the visual replication of a traditional 19th century sailing ship but employs a range of modern 20th century hi-tech materials. The criteria for rig design, verification and acceptance into class is presented together with details on the build quality, materials, survey, testing and certification requirements. Designers, tasked with meeting dassification or flag administration requirements for large sailing vessels have foand the criteria presentedinthis paper useful with regard to setting a standard for both design and acceptance of the masts and standing rigging. (t-- THE VERIFICATION OF MASTS AND RIGGING OF LARGE SAILING VESSELS INTRODUCFION At this time, the Langebrugge shipyard in Belgium had received an During the second half of the 1980's order from White Star Clippers of interest was developing with owners Brussels to build two barquentines, and operators in passenger ships suitable for up to 194 passengers with propelled by wind power. The a crew of 59. The ships were to concept was to provide a high measure 111.57m over the bowsprit, standard of accommodation and have a loaded displacement of 2556 services combined with the unique tonnes and carry 3365 m2 of sail area experience of tall ship sailing for on four steel masts. normal fare paying passengers. Initially intended for operation in the Caribbean the first ships would operate out of Miami on a pattern of one or two-week cruises. Research conducted by White Star suggested that their guests would be predominantly European, with a knowledge and interest in sailing The rig would require to be designed in order to permit some participation on the part of the passengers but with a high degree of confidence in the safety figure 1 of the rigging and sail systems. The first vessel, "Star Dipper" leaving Flushing for her sea trials is shown in figure 1. The vessels were submitted for formal classification with Lloyds Register with a contemplated hull notation of 100A1 Sailing Passenger Ship. Verification of and acceptance into class of the all-welded steel hull of the vessels was facilitated through the application of the Rules and Regulations for the classification of Steel Ships with some minor amendments. The verification of the masts and rigging, however, presented a more complex structural problem. Lloyd's Register's Rules for masts and standing rigging of sailing vessels had been discontinued in the mid 1920's. These Rules had provided scantlings and dimensions of masts, yards and wire rope standing rigging in tabular form. Mast scantlings being based upon mast length and rigging dimensions being based upon a numeral using the ship's principal dimensions. These early rules were developed and maintained mainly through service experience. Théicantlings of masts and wire ropes were based upon the material performance available at that time and the construction methods employed such practices as riveting of curved shells to form tubular mast structures. From the 2- THE VERIFICATION OF MASTS AND RIGGING OF LARGE SAILING VESSELS tabulated scantling method, it is clearly not possible to determine the margins of safety inherent in the final design, nor establish the limiting environmental conditions for the rig. The tabular scantling approach provides no flexibility regarding design change or novel design features and would appear to be adequate solely for a traditional mast/rigging configuration. Interestingly, in parallel with the appraisal of the Langebrugge barquentmes, another large LR classed sailing passenger ship, "Le Ponant" was under development at the French shipyard of SCNF. This aluminium hulled